Top answers

What does reversible mean?

Reversible is a term used for certain reactions that never reach a final stage. So imagine we have A and B reacting together to form C, and we say that this reaction is reversible. So at a point in time, in ...
AT
Answered by Antonis T. • Chemistry tutor
3628 Views

What is the difference between the present perfect and the past perfect?

The present perfect is used to express an action in the past that could still be going on until this day. For example: "Ich habe seit seit gestern nicht gegessen". To form it, you need to use the a...
RK
Answered by Romy K. • German tutor
2793 Views

what is: a) 1/3 +1/4 ? b) 4/6 + 3/12?

a)First make the denominators the same by multiplying the 1/3 by 4 and 1/4 by 3. makesure top and bottom are multiplied then add the numerators together not denominators. answer should be 7/12. b) Do the sam...
CL
Answered by Charlotte L. • Maths tutor
3556 Views

5.95g of potassium bromide was dissolved in 400cm3 of water. 1) calculate its molarity, 2)its concentration in g/dm3.

0.125 M 2) 14.875 g/dm3
NF
Answered by Natalie F. • Chemistry tutor
6295 Views

Upon perfroming vigorous excercise, an athlete's blood glucose begins to decrease. Describe how the body responds when blood glucose concentration begins to decrease.

pancreas detects low blood glucose, so produces glucagon. glycogen is converted to glucose
HV
Answered by Holly V. • Biology tutor
3145 Views